EP4142305A1 - Cradle and portable sound device - Google Patents

Cradle and portable sound device Download PDF

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Publication number
EP4142305A1
EP4142305A1 EP22167419.5A EP22167419A EP4142305A1 EP 4142305 A1 EP4142305 A1 EP 4142305A1 EP 22167419 A EP22167419 A EP 22167419A EP 4142305 A1 EP4142305 A1 EP 4142305A1
Authority
EP
European Patent Office
Prior art keywords
hinge
magnet
main body
coupled
cradle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22167419.5A
Other languages
German (de)
English (en)
French (fr)
Inventor
Sungin Choi
Eujin Kim
Wonseok Joo
Jungyun Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Publication of EP4142305A1 publication Critical patent/EP4142305A1/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1025—Accumulators or arrangements for charging
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C13/00—Details; Accessories
    • A45C13/005—Hinges
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C13/00—Details; Accessories
    • A45C13/10—Arrangement of fasteners
    • A45C13/1069—Arrangement of fasteners magnetic
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H02J7/0044—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction specially adapted for holding portable devices containing batteries
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1016—Earpieces of the intra-aural type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/033—Headphones for stereophonic communication
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0217—Mechanical details of casings
    • H05K5/0221—Locks; Latches
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0217—Mechanical details of casings
    • H05K5/0226—Hinges
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C11/00—Receptacles for purposes not provided for in groups A45C1/00-A45C9/00
    • A45C2011/001—Receptacles for purposes not provided for in groups A45C1/00-A45C9/00 for portable audio devices, e.g. headphones or MP3-players
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00—Details of connection covered by H04R, not provided for in its groups
    • H04R2420/07—Applications of wireless loudspeakers or wireless microphones

Definitions

  • the present disclosure relates to a cradle configured to receive earbuds therein and portable sound device including the cradle.
  • Portable sound device refers to a sound device configured to receive a sound signal from a terminal device and to transmit sound information collected through a microphone to the terminal device.
  • portable sound devices have adopted wired communication technology in which a terminal of a portable sound device is inserted into an ear port of a terminal device so as to receive sound signals.
  • demand for wireless-communication-type portable sound device is increasing due to convenience in mobility and use thereof.
  • a portable sound device may be provided with a sound output unit in order to fulfill various functions, including those of music reproduction, telecommunications and the like.
  • a portable sound device is capable of being connected to a base station by itself for telecommunication or of being directly connected to an external server so as to receive sound data.
  • a portable sound device is capable of fulfilling the above functions by being paired with another terminal device.
  • Portable sound devices including a headphone-type portable sound device configured to have a band shape so as to be worn on a user's head, an ear-hook-type portable sound device, and an ear-fit-type portable sound device, which are designed in consideration of portability, have been developed.
  • an earbud-type portable sound device which is designed to fit into user's ear and to transmit sound to the user's ears in response to output sound signals, is capable of being stored in a case called a "cradle" and of being charged.
  • the cover of the cradle In order to allow a pair of earbuds to be easily taken out of the case to be worn, the cover of the cradle must be capable of being opened and closed. Furthermore, there is need for a cradle designed to have minimal size for portability.
  • An object of the present disclosure is to provide a cradle including a cover capable of being opened and closed in a semi-automatic manner and a portable sound device including the cradle.
  • an aspect of the present disclosure provides a cradle including a main body having a seating portion in which an earbud is seated, a folder body capable of being converted between a closed state in which the folder body covers the seating portion and an opened state in which the folder body opens the seating portion, and a hinge portion configured to hingedly couple the folder body to the main body, wherein the hinge portion includes a first hinge coupled to the main body, a second hinge coupled to the folder body, a shaft extending through the first hinge and the second hinge, a first magnet coupled to the first hinge, and a second magnet coupled to the second hinge or the folder body, and wherein the first magnet and the second magnet are disposed so as to maintain a repulsive force therebetween while the folder body is converted into the opened state from the closed state.
  • the first magnet may be coupled to the first hinge close to the shaft.
  • the distance between the first magnet and the second magnet may be minimized in an intermediate state between the closed state and the opened state.
  • the first magnet may include a first surface and a second surface each having a first polarity, the first surface and the second surface defining an obtuse angle of more than 90° therebetween, and the second magnet may include a third surface and a fourth surface each having the first polarity, the third surface and the fourth surface defining an obtuse angle of more than 90°.
  • the first surface and the third surface may face each other in the closed state, and the second surface and the fourth surface may face each other in the opened state.
  • the shaft may be positioned at the folder body.
  • the first hinge may include a first portion coupled to the main body and a second portion projecting toward the folder body, and the shaft may be coupled to the second portion of the first hinge.
  • the second hinge may include a third portion, which is positioned parallel to the second portion and through which the shaft extends, and a fourth portion, which extends from the third portion and is fixed to the folder body.
  • the folder body and the main body may define an angle greater than 90° therebetween in the opened state.
  • the hinge portion may include a metal material.
  • the hinge portion may be positioned at one side of the main body, and the cradle may further include a wireless charging antenna positioned at the one side of the main body.
  • a portable sound device including a pair of earbuds each having a sound output unit, and a cradle having seating portions in which the pair of earbuds are seated, wherein the cradle includes a main body having formed therein the seating portions, a folder body capable of being converted between a closed state in which the folder body covers the seating portion and an opened state in which the folder body opens the seating portion, and a hinge portion configured to hingedly couple the folder body to the main body, wherein the hinge portion includes a first hinge coupled to the main body, a second hinge coupled to the folder body, a shaft extending through the first hinge and the second hinge, a first magnet coupled to the first hinge, and a second magnet coupled to the second hinge or the folder body, and wherein the first magnet and the second magnet are disposed so as to maintain a repulsive force therebetween while the folder body is changed into the opened state from the closed state.
  • the first magnet may be coupled to the first hinge close to the shaft.
  • the distance between the first magnet and the second magnet may be minimized in an intermediate state between the closed state and the opened state.
  • the first magnet may include a first surface and a second surface each having a first polarity, the first surface and the second surface defining an obtuse angle of more than 90° therebetween
  • the second magnet may include a third surface and a fourth surface each having the first polarity, the third surface and the fourth surface defining an obtuse angle of more than 90° therebetween, wherein the first surface and the third surface face each other in the closed state, and the second surface and the fourth surface face each other in the opened state.
  • the pair of earbuds may project partway out of the seating portions, and the folder body and the main body may define an angle greater than 90° therebetween in the opened state.
  • FIG. 1 is a perspective view illustrating a portable sound device 100 according to an embodiment of the present disclosure.
  • FIG. 2 is a block diagram illustrating the configuration of earbuds 300 and a cradle 200 according to an embodiment of the present disclosure.
  • the portable sound device 100 may include the earbuds 300 and the cradle 200 configured to receive the earbuds 300 therein.
  • the earbuds 300 may be put into a user's ears so as to serve to transmit sound thereto.
  • the earbuds 300 may be inserted into the right ear and the left ear of the user so as to receive sound signals through a short-range communication and to output a sound.
  • the pair of earbuds 300 may be designed so as be symmetrical with each other.
  • Each of the pair of earbuds 300 may include a controller 380, a wireless communication unit 385, a sound output unit 340, a sensing unit 375, a microphone 360, a user input unit 370, and a power supply 390.
  • the controller 380 may control the sound output unit 340 to be activated in response to a sound signal received through the wireless communication unit 385, and may control the sound output unit 340 to transmit the sound collected through the microphone 360 through the wireless communication unit 385 or to provide more clear sound by removing the noise from the sound collected through the microphone 360.
  • a printed circuit board may be positioned in a housing. Because a plurality of ICs are mounted on the printed circuit board 381, there is a problem in that the thickness thereof is increased when the printed circuit board 381 is disposed so as to overlap a battery. Accordingly, a flexible circuit board may be used in order to dispose the printed circuit board 381 so as not to overlap the battery and to realize mounting and connection of some components, such as the microphone, the user input unit 370, and the sound output unit 340.
  • the wireless communication unit 385 may be connected to a mobile communication base station by itself so as to perform communication, the wireless communication unit 385 may generally be connected to an external device such as a mobile terminal via a short-range communication.
  • Examples of the short-range communication may include at least one of Bluetooth TM , RFID (Radio Frequency Identification), Infrared Data Association (IrDA), Ultra-Wideband (UWB), ZigBee, Nearfield Communication (NFC), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus).
  • RFID Radio Frequency Identification
  • IrDA Infrared Data Association
  • UWB Ultra-Wideband
  • ZigBee ZigBee
  • NFC Nearfield Communication
  • Wi-Fi Wireless-Fidelity
  • Wi-Fi Direct Wireless USB (Wireless Universal Serial Bus).
  • the sound output unit 340 which is a device configured to output sound according to a sound signal, may be put into a user's ear so as to serve to transmit sound.
  • the microphone 360 may process an external sound signal into electric voice data.
  • the processed voice data may be transmitted to an external terminal device or an external server through the wireless communication unit 385.
  • the microphone 360 may realize various denoising algorithm for removing noise generated in the course of receiving external sound signals.
  • the sensing unit 375 which is a device configured to check the state of the earbuds 300 and ambient circumstances, may include an illuminance sensor configured to detect brightness, a touch sensor configured to detect touch input, a gyro sensor configured to detect a position, an earbud switch configured to detect whether the earbuds are positioned in a cradle 200, and the like.
  • the user input unit 370 may be an input unit configured to allow a user to control the earbuds 300.
  • the power supply 390 may use a button-type battery in order to supply power required for the controller and various components and to be capable of being mounted in a small space. Because the size of the battery determines the operating time of the portable sound device 300, there is a need to ensure as large a space as possible. Accordingly, it is possible to increase a mounting space by disposing some of the boards so as to overlap each other.
  • the power supply 390 may include a power terminal, which is to be connected to an external power source so as to charge the battery. The power terminal may be brought into contact with a power terminal provided at the cradle 200 in which the portable sound device 300 is mounted.
  • the battery When the capacity of the battery is increased, the battery can be operated for a longer period of time. However, when the capacity of the battery is excessively increased, there is a problem in that the size of earbuds 300 is increased. Because the earbuds 300 must be maintained in the state of being inserted into a user's ears during use, the earbuds 300 may be easily separated from the user's ears or may be difficult to mount in the user's ears when the weight or volume of the earbuds 300 is excessively increased.
  • the earbuds 300 may be charged and stored in the case that is the cradle 200, while being carried by a user.
  • the cradle 200 may include a main body 210 including seating portions 215 into which the earbuds 300 are respectively inserted and a folder body 220 configured to open and close the seating portions 215 in the main body 210.
  • the folder body 220 may be coupled to the main body 210 so as to be openable and closable via a hinge portion 230.
  • the cradle 200 may include a battery as a power supply 290, and may supply power to the earbuds 300 when the earbuds 300 are inserted into the seating portions 215.
  • the cradle 200 may include ports to which charge cables are connected so as to charge the battery, or may be include a wireless charging coil provided at the main body 210 in order to charge the battery using a wireless charging technology.
  • the wireless communication unit may be provided only at the earbuds 300, the wireless communication unit 285 may also be provided at the cradle 200 in order to perform wireless communication between the cradle 200 and the earbuds 300 or wireless communication between the cradle 200 and a terminal device.
  • a display unit 250 may include a light for displaying the state of the power supply 290, such a charging state, and a user input unit such a button for opening and closing the folder body 220 or a button for pairing.
  • a sensing unit 275 may detect whether or not the folder body 220 is opened or whether the earbuds 300 are inserted, and may transmit the detection result to a controller 280.
  • the state in which the folder body 220 exposes the seating portions 215 may be referred to as an opened state, and the state in which the folder body 220 covers the seating portions 215 may be referred to as a closed state.
  • the angle between the folder body 220 and the main body 210 is increased in the opened state, there is an advantage of easy removal of the earbuds 300.
  • the rotational angle of the hinge portion 230 is increased, the seating portions 215 for the earbuds 300 are sufficiently opened, thereby making it easy to insert the earbuds 300 into the seating portions 215 and to take the earbuds 300 out of the seating portion 215.
  • the rotational angle ⁇ of the hinge portion 230 is increased, there is a problem in that the distance a between the main body 210 and the folder body 220 is increased or the size of the hinge portion 230 is increased.
  • the folder body 220 be capable of being rotated 90° or more with respect to the main body 210.
  • FIG. 3 is a cross-sectional view taken along line A-A in FIG. 1 , which illustrates the interior of the folder body 220 and the state in which the folder body 220 and the main body 210 are coupled via the hinge portion 230. Because the earbuds 330 may project upwards in the state in which the earbuds 330 are inserted into the seating portions 215, as illustrated in FIG. 1 , in order to allow the earbuds 330 to be easily taken out of the seating portions 215, the folder body 220 may have a thickness sufficient to cover the earbuds 300.
  • the folder body 220 may be coupled to the main body 210 so as to cover the upper surface, and the hinge portion 230 may be positioned at first sides of the main body 210 and the folder body 220.
  • the hinge portion 230 may include a first hinge 231, coupled to the main body 210, a second hinge 232, coupled to the folder body 220, and a shaft 235, extending through the first hinge 231 and the second hinge 232 and rotatable therein.
  • the shaft 235 may be positioned at the main body 210, at the folder body 220, or between the main body 210 and the folder body 220.
  • the boundary surface of the main body 210 or the folder body 220 must be cut in order to prevent the shaft 235 from projecting outwards from the main body 210 and the folder body 220 or to prevent the main body 210 and the folder body 220 from interfering with each other, as in a typical hinge.
  • FIGs. 4 to 6 are views illustrating the opening and closing operation of the folder body with respect to the main body in the portable sound device according to various embodiments of the present disclosures.
  • the shaft 235 is positioned at the main body 210.
  • the folder body 220 cannot actually be opened to 90° or more because the end of the folder body 220 interferes with the main body 210 in the opened state as shown in FIG. 4(b) .
  • the folder body 220 interferes with the main body 210 when the folder body 220 is opened to 90° or more, the main body 210 must be cut as shown in FIG. 5(b) , or a gap must be formed between the main body 210 and the folder body 220 as shown in FIG. 5(c) .
  • the present disclosure is capable of ensuring a rotational space for rotation of the folder body 220 by disposing the shaft 235 at the folder body 220 and utilizing the gap between the earbuds 330 and the shaft 235, as shown in FIG. 6(a) .
  • the angle ⁇ between the folder body 220 and the main body 210 may be increased to about 101°, and the distance a between the earbuds 300 and the folder body 220 may also be increased to 12.61 mm, in contrast to about 2mm, as in the design shown in FIG. 5 .
  • the hinge portion 230 may be made of a metal material. Because the metal material has high rigidity, the hinge portion 230 may be difficult to break even when the hinge portion 230 is configured to have a small thickness. However, when the hinge portion 230 is made through injection molding, the hinge portion 230 may require a greater thickness than a hinge portion made of metal in order to ensure sufficient rigidity.
  • FIG. 7 is a view of an opening and closing operation of the folder body with respect to the main body in the portable sound device in the case in which the shaft is positioned at a point spaced further inwards apart from the outer surface of the folder body 220.
  • the shaft 235 must be further spaced apart from the outer surface of the folder body 220 than the metal hinge portion 230.
  • the folder body 220 overlaps the earbuds 300 because the distance between the earbuds 300 and the shaft 235 is decreased, and the folder body 220 interferes with the main body 210 because the rotational distance of the folder body 220 is increased, as illustrated in FIG. 7(b) .
  • the hinge portion 230 includes a metal material.
  • the first hinge 231 may include a first portion 231a coupled to the main body 210 and a second portion 231b which projects upwards (in the direction of the folder body 220) and overlaps the second hinge 232 in a horizontal direction, as illustrated in FIG. 3 ).
  • the second hinge 232 may include a third portion 232a, which is disposed parallel to the second portion 231b and through which the shaft 235 extends, and a fourth portion 232b fixed to the folder body 220.
  • the fourth portion 232b may extend and be stably fixed to the folder body 220 by means of a screw. This extension of the second hinge 232 may enable rotative force to be easily transmitted to the folder body 220.
  • a locking magnet 244 may be provided at the side of the folder body 22 opposite the side at which the hinge portion 230 is positioned, and a metal body 243 or a magnet, which has at a surface facing the locking magnet 244 a polarity opposite the polarity of the facing surface of the locking magnet 244 facing the same, may be provided at the portion of the main body 210 that faces the locking magnet 244 in the closed state.
  • the hinge portion 230 may be rotated, and the folder body 220 may be opened.
  • the folder body 220 is configured in a semi-automatic manner such that the folder body 220 is subjected to a force required to open the folder body 220 when the folder body 220 is pushed beyond a predetermined angle by a user, convenience in use is improved.
  • an elastic element such as a spring may be used.
  • the number and volume of parts is increased, and manufacturing costs are increased.
  • the present disclosure may be embodied so as to be semi-automatic using a magnet, as illustrated in FIG. 3 .
  • the magnet may include a first magnet 241 coupled to the first hinge 231 and a second magnet 242 coupled to the second hinge 232 or the folder body 220.
  • the first magnet 241 and the second magnet 242 may be oriented such that the surfaces of the first magnet 241 and the second magnet 242 that face each other have the same polarity in order to maintain a repulsive force therebetween.
  • the N pole is illustrated in the drawing, the first and second magnets may be oriented such that the S pole of the first magnet 241 faces the S pole of the second magnet 242, which will be referred to as a first pole, without being limited thereto.
  • FIG. 8 is a view illustrating another orientation of the first magnet 241 and the second magnet 242. Unlike FIG. 3 , the first magnet 241 is coupled to the main body 210 or the first portion 231a of the first hinge 231 coupled to the main body 210.
  • the size of the first magnet 241 may be freely controlled and the first pole of the first magnet 241 and the first pole of the second magnet 242 may be disposed at the closest location with respect to each other throughout the rotation of the folder body 220, the distance between the first magnet 241 and the second magnet 242 may be gradually increased as the folder body 220 is opened, as illustrated in FIGs. 8(a) to 8(c) .
  • the first magnet 242 is coupled to the first hinge 231 close to the shaft 235, as illustrated in FIG. 3 .
  • attractive force may be generated between the second pole of the first magnet 241 and the first pole of the second magnet 242.
  • a repulsive force stronger than the attractive force may be applied to the folder body 220.
  • FIG. 9 is a view illustrating an opening operation of the folder body 220 of the cradle 200 having the hinge portion 230.
  • FIG. 10 is an enlarged view illustrating the orientation of the first magnet 241 and the second magnet 242 in more detail.
  • each of the first magnet 241 and the second magnet 242 that corresponds to the first pole may include two surfaces, which define an obtuse angle therebetween, such that the first pole of the first magnet 241 faces the first pole of the second magnet 242 in all stages.
  • the first magnet 241 may include a first surface 241a, which is inclined so as to face the second magnet 242, and a second surface 241b, which faces upwards.
  • the second magnet 242 may include a third surface 242a close to the first surface 241a in the closed state and a fourth surface 242b close to the second surface 241b in the opened state.
  • the first surface 241a may face an inclined upward direction based on a diagonal line
  • the second surface 241b may face an upward direction
  • the third surface 242a may face a leftward direction
  • the fourth surface 242b may face a leftward and downward direction.
  • the first magnet 241 is disposed in a small space in the first hinge 231 positioned above the shaft 235, the first magnet 241 must have a small size. Accordingly, in order to ensure sufficient magnetic force, the size of the second magnet 242 may be increased compared to the size of the first magnet 241.
  • the folder body 220 is opened while the first surface 241a faces the third surface 242a in the closed state shown in FIG. 10(a) , whereby the corner between the first surface 241a and the second surface 241b faces the corner between the surface 242a and the fourth surface 242b, the distance between the first magnet 241 and the second magnet 242 becomes the shortest.
  • the repulsive force between the first magnet 241 and the second magnet 242 is maximized, thus causing rotation of the folder body 220 about the hinge portion 230. Consequently, the repulsive force may be applied so as to assist the operation of opening the folder body 220 while the folder body 220 is opened, and may be applied so as to assist in closing the folder body 220 while the folder body 220 is closed.
  • the distance therebetween is less than the distance in the state shown in FIG. 10(b) , whereby the repulsive force is decreased.
  • the repulsive force between the first magnet 241 and the second magnet 242 in the completely opened state maintains the folder body 220 in the opened state, thereby allowing the earbuds 330 to be easily put into the seating portion 215.
  • the first magnet 241 and the second magnet 242 may continuously provide repulsive force to assist the folder body 220 in a semi-automatic opening and closing operation and to maintain the folder body 220 in the opened state.
  • the cradle 200 according to the present disclosure has a simplified semi-automatic opening and closing structure in which the number of parts is decreased, it is possible to simplify the manufacturing process and reduce the manufacturing costs.
  • the hinge is made of a metal material, the durability of the portable sound device is improved and the number of parts is reduced, thereby making it possible to reduce the incidence of defects and malfunctions.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Telephone Set Structure (AREA)
EP22167419.5A 2021-08-26 2022-04-08 Cradle and portable sound device Pending EP4142305A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2021/011438 WO2023027213A1 (ko) 2021-08-26 2021-08-26 크래들 및 휴대용 음향기기

Publications (1)

Publication Number Publication Date
EP4142305A1 true EP4142305A1 (en) 2023-03-01

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ID=81307100

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22167419.5A Pending EP4142305A1 (en) 2021-08-26 2022-04-08 Cradle and portable sound device

Country Status (4)

Country Link
US (1) US20230067147A1 (ko)
EP (1) EP4142305A1 (ko)
KR (1) KR20240017858A (ko)
WO (1) WO2023027213A1 (ko)

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US20230362527A1 (en) * 2022-05-06 2023-11-09 Bose Corporation Raised feature on earbud body
USD1022895S1 (en) * 2022-09-09 2024-04-16 Guangzhou Langsdon Electronic Technology Co., Ltd. Earphone charging case

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